Features: High quality: This oxygen sensor socket wrench is made- of high-quality materials and is durable. Scope of application: This disassembly socket wrench is suitable for both heated and non heated oxygen sensors. The cut off section allows the socket to pass through the wiring. Practical: This oxygen sensor wrench is used for 1/2-inch drive ratchets or circuit breaker- rods. Professional or DIY use. Function: This oxygen sensor wrench allows you to remove and install sensors on computer-controlled vehicles.Function: Including chrome-vanadium structure and six point-socket with cutting line gap-. Specifications: Item：Oxygen Sensor Socket Material：65 Manganese Steel Color: Black-Large Opening / White-Small Opening Size:approx 22mm/0.87in Weight:300g Quantity:1PC for: 1/2-inch Ratchet Or Circuit Breaker-Lever. Professional Or Diy Use. Package Includes: 1PC Oxygen Sensor Socket note: Due to the problems of lighting effects and shooting angles-, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.